Ice-O-Matic Gourmet UCG Series Installation And Service Manual
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Summary of Contents for Ice-O-Matic Gourmet UCG Series
- Page 1 UCG GOURMET SERIES UNDERCOUNTER MODELS- UCG060A, UCG080A, UCG100A, UCG130A Installation and Service Manual Ice-O-Matic 11100 E. 45 Ave. Denver, Colorado 80239 Part Number 9081522-01 1-866-PURE-ICE Revision 09/20...
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Page 3: General Information And Installation
This manual provides the specifications and the step-by step procedures for the installation, start up, operation, cleaning, and maintenance for the Ice-O-Matic UCG Undercounter Series ice makers. To retain the safety and performance built into this ice maker, it is important that installation and maintenance be conducted in the manner outlined in this manual. -
Page 4: Electrical Connections
See data plate for current requirements to determine wire size to be used for electrical connections. All Ice-O-Matic ice makers require a solid earth wire. They are supplied from the factory completely pre-wired and require only electrical power connections to the wire cord provided at the rear of the unit. -
Page 5: Water Drain
UCG GOURMET SERIES UNDERCOUNTER position between the water supply line and the unit. If water contains a high level of impurities, it is advisable to consider the use of an appropriate water filter. WATER DRAIN The recommended drain tube is a plastic or flexible tube with ¾” (18mm) I.D. which runs to an open trapped and vented drain. -
Page 6: Installation Practice
11. Has the unit been registered for warranty? Check for correct model and serial number against the serial plate. 12. Has the owner been given the name and the phone number of the authorized Ice-O-Matic Service Agency serving him/her? INSTALLATION PRACTICE WARNING: This icemaker is not designed for outdoor installation and will not function in ambient temperatures below 50˚F (10˚C) and above 100˚F (40˚C). - Page 7 UCG GOURMET SERIES UNDERCOUNTER During the water filling operation, check to verify that the incoming water dribbles, through the evaporator plate dribbler holes, down into the sump reservoir to fill. Also, check that the incoming surplus of water flows out through the overflow pipe into the drain line. During the water fill phase, the components energized are: 1.
- Page 8 UCG GOURMET SERIES UNDERCOUNTER Install, if required, the refrigerant service gauges on both the high side and low side Schrader valves to check the compressor head and suction pressures. NOTE: The condenser temperature sensor, which is located within the condenser fins, keep the head (condensing) pressure between 110-130psig (8.5-9.5 bar).
- Page 9 UCG GOURMET SERIES UNDERCOUNTER Check to see through the ice discharge opening that the spray system is correctly seated and that the water jets uniformly reach the interior of the inverted mold cups. Also, make sure that the plastic curtain is hanging freely and there is not excessive water spilling through it. The ice making process begins with the water sprayed into the molds that gets gradually refrigerated by the heat exchange with the refrigerant flowing into the evaporator serpentine.
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- Page 11 UCG GOURMET SERIES UNDERCOUNTER After about 17-20 minutes from the beginning of the freeze cycle, in a hypothetical ambient temperature of 70˚F (21˚C), the defrost cycle takes place with the hot gas, the water inlet, and the water drain valves simultaneously activated (Fig. 5). The electrical components in operation on these models are the compressor, water inlet valve, hot gas valve, water drain valve, and the water pump in the first 15 seconds.
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Page 12: Principle Of Operation
PRINCIPLE OF OPERATION In the Ice-O-Matic cube ice makers, the water used to make the ice is kept constantly in circulation by an electric water pump which primes it to the spray system nozzles form where it is diverted into the inverted mold cups of the evaporator. -
Page 13: Freeze Cycle
UCG GOURMET SERIES UNDERCOUNTER A. FREEZE CYCLE The freeze cycle is controlled by the evaporator temperature sensor (which has its probe in contact with the evaporator serpentine) that determines the length of its first portion of the cycle. When the temperature of the evaporator serpentine drops to a pre-set value (small red LED ON steady) the evaporator sensor probe changes its electrical resistance allowing a low voltage current (15 volts) to flow to the PC Board which in turn activates an electric timer. - Page 14 UCG GOURMET SERIES UNDERCOUNTER NOTE: If after 15 minutes in the freeze cycle the temperature of the evaporator sensor probe is higher than 32˚F (0˚C) – small red LED still OFF – (shortage of refrigerant, inoperative hot gas valve, etc.) the PC Board will switch the unit OFF immediately with the simultaneous blinking of the WARNING RED LED.
- Page 15 UCG GOURMET SERIES UNDERCOUNTER NOTE: In case the unit is able to reach 32˚F (0˚C) evaporating temperature within 15 minutes, but after 45 minutes from the beginning of the freeze cycle it has not yet reached the evaporator temperature of 5˚F (-15˚C), the machine goes straight into the defrost cycle omitting the timed portion of the freeze cycle per the setting of the first four DIP SWITCHES.
- Page 16 UCG GOURMET SERIES UNDERCOUNTER Electrical Components (Loads) Compressor…………………………….. Fan Motor and TRIAC………………. Hot Gas Valve………………………….. Water Inlet Valve…………………….. PC Board Relay 1 Coil………………. PC Board Relay 2 & 3 Coil………… Water Pump……………………………. PC Board Timer……………………….. ...
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Page 17: Refrigerant Metering Device
UCG GOURMET SERIES UNDERCOUNTER 4. REFRIGERANT METERING DEVICE Capillary Tube 5. COMPONENTS DESCRIPTION a. Evaporator Temperature Sensor The evaporator temperature sensor probe, located in contact with the evaporator serpentine, detects the dropping of the evaporator temperature during the freeze cycle and signals it by supplying a current flow to the microprocessor of the PC Board. According to the current received, the small red LED of the PC Board is energized (blink or steady). - Page 18 UCG GOURMET SERIES UNDERCOUNTER b. Condenser Temperature Sensor The condenser temperature sensor probe, located within the condenser fins, detects the condenser temperature variations and signals them by supplying current, a low voltage, to the PC Board. In relation to the different current received, the microprocessor of the PC Board supplies, through a TRIAC, the power at high voltage to the fan motor in order to cool the condenser and to reduce its temperature.
- Page 19 UCG GOURMET SERIES UNDERCOUNTER At restart, from tripping OFF at bin full, the new PC Board assures 45 seconds water fill phase to refill the water sump up to the maximum level. On the PC Board there are four jumpers to select: •...
- Page 20 UCG GOURMET SERIES UNDERCOUNTER LED Meaning GREEN LED ON – unit powered ON • YELLOW BIN FULL LED ON – unit shut OFF with full bin • RED ALARM LED ON – high condensing temperature • • RED ALARM LED BLINKING – high evaporating temperature YELLOW FREEEZE CYCLE ON –...
- Page 21 UCG GOURMET SERIES UNDERCOUNTER ON STEADY CONDENSER SENSOR MALFUNCTION BLINKING EVAPORATOR SENSOR MALFUNCTION PUSH >5 SECONDS DURING WATER FILL TO MOVE THE UNIT INTO FREEZE PUSH >5 SECONDS DURING FREEZE TO MOVE THE UNIT INTO DEFROST PUSH >5 SECONDS DURING DEFROST TO MOVE THE UNIT INTO FREEZE PUSH 2 SECONDS-5 SECONDS DURING WATER FILL TO MOVE TH EUNIT INTO CLEANING...
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Page 22: Dip Switch
UCG GOURMET SERIES UNDERCOUNTER 180 seconds Up to 6 min Up to 9 min 30 sec 30 sec 165 seconds 6 min 30 sec – Up to 3 min 9 min 30 7 min sec – 10 min 150 seconds 7-8 min 3 min –... - Page 23 UCG GOURMET SERIES UNDERCOUNTER h. Condenser Air Filter Located in front of the air condenser, it can be removed by withdrawing it through the opening of the front panel for cleaning or replacing. Water Spray System Water is pumped and sprayed (through the nozzles) into each individual cup to be frozen into ice.
- Page 24 UCG GOURMET SERIES UNDERCOUNTER the low-pressure refrigerant vapor causing its temperature to rise and become high pressure hot vapor, which is then released through the discharge valve. UNIT REFRIGERANT CHARGES The UCG Undercounter Series contains R290A refrigerant. See table below for specifics by model. Model Electrical Fuse...
- Page 25 UCG GOURMET SERIES UNDERCOUNTER CLEANING Ice-O-Matic recommends cleaning the ice machine every 6 months, but not more than once per month to avoid potential damage to the machine. WARNING: Before proceeding with any cleaning and maintenance operation, make sure the power is disconnected and water supply is turned off.
- Page 26 UCG GOURMET SERIES UNDERCOUNTER ADJUSTMENT PROCEDURES ADJUSTMENT OF THE CUBE SIZE NOTE: Before performing actual adjustment of the cube size, check other possible causes for cube size problems, refer to the Service Diagnosis Section for problem review and analysis. Do not perform any adjustment until the ice making system has progressed through several complete freeze and harvest cycles in order to observe the size and...
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Page 27: Service Diagnosis
UCG GOURMET SERIES UNDERCOUNTER SERVICE DIAGNOSIS SYMPTOM POSSIBLE CAUSE SUGGESTED CORRECTION Unit will not run: Blown power in fuse in PC Replace fuse and check for • No warning LED glows Board cause of blown fuse Main switch in OFF position Turn switch to ON position Inoperative PC Board Replace PC Board... - Page 28 UCG GOURMET SERIES UNDERCOUNTER Cubes too small Freezing cycle too short Review setting of DIP SWITCH keys Capillary tube partially Reclaim charge, evacuate, restricted replace drier, and recharge with proper amount of refrigerant. Moisture in the system Same as above. Shortage of refrigerant Check for leaks.
- Page 29 UCG GOURMET SERIES UNDERCOUNTER Overcharge of refrigerant Reclaim charge, evacuate, replace drier, and recharge with proper amount of refrigerant. Capillary tube partially Reclaim charge, evacuate, restricted replace drier, and recharge with proper amount of refrigerant. Hot gas solenoid valve leaking Replace valve.
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Page 30: Wiring Diagram
UCG GOURMET SERIES UNDERCOUNTER WIRING DIAGRAM pg. 30... -
Page 31: Warranty
UCG GOURMET SERIES UNDERCOUNTER WARRANTY Please visit www.iceomatic.com/warranty to register your unit and to get current warranty information. Refer to it for applicable coverage. In general warranty covers defects in material or workmanship. It does not cover maintenance, corrections to installations, or situations when the machine is operated in circumstances that exceed the limitations printed in this manual.